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Table 2 Female fitness traits across nuptial gift mating treatments, PG (protein gift), FG (fly gift), WG (worthless gift) and NG (no gift), data are presented as means and standard error.

From: Worthless donations: male deception and female counter play in a nuptial gift-giving spider

  PG FG WG NG Statistics
       P DF
% Egg hatching success 0.66 ± 0.10 a
(nes = 12)
0.50 ± 0.15 a
(nes = 11)
0.48 ± 0.13 a
(nes = 8)
0.33 ± 0.33 b
(nes = 3)
χ2yates = 91.4 <0.0001 3
Clutch-size 45.5 ± 4.5 a
(nes = 12)
38.0 ± 4.7 a
(nes = 11)
43.8 ± 5.5 a
(nes = 8)
27.3 ± 9.0 a
(nes = 3)
F = 1.30 0.29 3
Number of spiderlings per egg-sac 31.7 ± 6.1 a
(nes = 12)
18.2 ± 6.5 a
(nes = 11)
23.7 ± 7.6 a
(nes = 8)
6.3 ± 12.3 a
(nes = 3)
F = 1.45 0.24 3
Size of spiderlings (mm+SE) 0.649 ± 0.003 a
(nsp = 211;
nes = 12)
0.672 ± 0.004 b
(nsp = 107;
nes = 7)
0.674 ± 0.004 b
(nsp = 103;
nes = 7)
n/a χ2overall = 86.92
χ2group= 56.11
χ2clutch-size = 52.49
χ2group*clutch-size= 27.56
<0.0001
<0.0001
<0.0001
<0.0001
5
2
1
2
  1. nsp = spiderlings sample size; nes= egg-sac sample size.
  2. Spiderling size was analyzed with GLM with clutch size as covariate. Groups with the same letter were not significantly different (p > 0.05).